From: David Brownell Date: Sat, 21 Jul 2007 11:37:56 +0000 (-0700) Subject: rtc kconfig: point out need for static linkage X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=55ff1aba940ff46d4f6d4fd790ea3e1a47aaa84f;p=deliverable%2Flinux.git rtc kconfig: point out need for static linkage Various people have expressed surprise that their modular RTC drivers don't seem to work for initializing the system time at boot. To help avoid such unpleasantness, make the Kconfig text point out that the driver probably needs to be statically linked. Signed-off-by: David Brownell Acked-by: Alessandro Zummo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig index 35f34665e3c4..505f512ac254 100644 --- a/drivers/rtc/Kconfig +++ b/drivers/rtc/Kconfig @@ -38,6 +38,9 @@ config RTC_HCTOSYS_DEVICE clock, usually rtc0. Initialization is done when the system starts up, and when it resumes from a low power state. + The driver for this RTC device must be loaded before late_initcall + functions run, so it must usually be statically linked. + This clock should be battery-backed, so that it reads the correct time when the system boots from a power-off state. Otherwise, your system will need an external clock source (like an NTP server).